Environment-friendly low-consumption hot-method regeneration treatment device for used sand

Abstract

The utility model relates to the technical field of hot-process regeneration of used sand, and discloses an environment-friendly low-consumption hot-process regeneration treatment device for used sand, which comprises a hot-process treatment box for used sand, a driving motor is arranged at the top of the hot-process treatment box for used sand, and a filter residue filtering plate is arranged on the inner side of the hot-process treatment box for used sand. According to the utility model, through the arrangement of the combustor, heating can be carried out, waste gas and residual heat are discharged through the air outlet return pipe, the waste gas is filtered and discharged through the waste gas filtering device, the residual heat flows back to the annular hot air ingress pipe through the circulating flow guide pipe, the annular hot air ingress pipe sprays the residual heat, the residual heat is recycled, and the driving motor drives the stir-frying frame. The used sand on the filter residue filtering plate is uniformly stir-fried in a rotary manner and is uniformly heated, and impurities are filtered by the filter residue filtering plate, so that the device is good in heat energy recycling effect, relatively environment-friendly and low in energy consumption, and the used sand hot-method stir-frying stirring capability is good, the heating is uniform, and the treatment efficiency and the treatment quality are excellent.

Description

TECHNICAL FIELD

[0001] The utility model relates to old sand hot method regeneration technical field, concretely is environmental protection low -consumption old sand hot method regeneration treatment device. BACKGROUND

[0002] Old sand regeneration is to remove resin and other impurities in old sand by mechanical friction, heating roasting and other ways, so that old sand can be recycled; the demolding quality of mechanical regenerated sand is unstable, and the resin film remaining in the sand pit will affect the performance of the core sand; hot method regeneration is to remove impurities in old sand by heating roasting, and then recycle the old sand; the quality of hot method regenerated sand is stable, the sand grain morphology is round, the resin film on the surface of the sand grain is removed clean, and the phase change stress of the sand grain is eliminated; hot method regeneration of old sand is the main direction of current sand treatment technology.

[0003] The current widely used old sand hot method regeneration device in casting industry generally uses gas or electric heating method, the heating method is relatively single, the heat loss is relatively large when the old sand is hot regenerated, the heat waste cannot be recycled, the environmental protection and low energy consumption ability is relatively insufficient, the heat energy loss is large, the production cost is increased, and the hot method regeneration of old sand is relatively insufficient in the ability of turning and uniform heating, the regeneration treatment quality and efficiency are relatively not good, therefore, we provide environmental protection low -consumption old sand hot method regeneration treatment device to solve the above problems. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the defects of prior art, the utility model provides environmental protection low -consumption old sand hot method regeneration treatment device, has the advantages of good heat recycling effect, relatively environmental protection and low energy consumption, and good old sand hot method turning and stirring capacity, uniform heating, excellent treatment efficiency and treatment quality.

[0006] (II) technical scheme

[0007] In order to achieve the above object, the utility model provides the following technical scheme: environmental protection low -consumption old sand hot method regeneration treatment device, including old sand hot method treatment box, the top of old sand hot method treatment box is equipped with drive motor;

[0008] The inner side of old sand hot method treatment box is equipped with filter residue plate, the center of filter residue plate is rotatably connected with driving turnover frame, the top end of driving turnover frame is connected with the output end of drive motor, the side surface of the top of old sand hot method treatment box is equipped with leakage prevention discharge hopper;

[0009] The side of the top of the old sand hot treatment box is provided with an air outlet return pipe, the bottom of the inner side of the old sand hot treatment box is provided with an annular hot air guide pipe, the side of the old sand hot treatment box is provided with a circulating guide pipe, the two ends of the circulating guide pipe are respectively connected with the annular hot air guide pipe and the air outlet return pipe, the side of the old sand hot treatment box away from the circulating guide pipe is provided with a burner, and the top of the circulating guide pipe is provided with a waste gas filtering device.

[0010] Preferably, the side of the old sand hot treatment box is provided with a sand outlet pipe, the sand outlet pipe is located above the side of the filter residue plate, and the bottom of the old sand hot treatment box is provided with a waste outlet pipe.

[0011] Preferably, the side of the sand outlet pipe and the waste outlet pipe away from the old sand hot treatment box is provided with a sealing cover, and the top of the leakage-proof hopper is provided with a funnel leakage-proof cover.

[0012] Preferably, the filter residue plate is a high-heat-resistant screen, the shaft center of the driving stir-frying frame is rotationally connected to the center of the filter residue plate, the top of the driving stir-frying frame penetrates the top of the old sand hot treatment box, and the joint between the driving stir-frying frame and the old sand hot treatment box is provided with an oil seal.

[0013] Preferably, the inner top wall of the old sand hot treatment box is provided with a heat-resistant insulation plate, the bottom of the leakage-proof hopper penetrates the heat-resistant insulation plate, and the shaft center of the driving stir-frying frame is rotationally connected to the center of the heat-resistant insulation plate.

[0014] Preferably, the stirring blade of the driving stir-frying frame is attached to the top of the filter residue plate, the bottom of the driving stir-frying frame is provided with a cleaning scraper, and the cleaning scraper is attached to the inner bottom wall of the old sand hot treatment box.

[0015] Preferably, the air outlet return pipe, the annular hot air guide pipe, the circulating guide pipe and the old sand hot treatment box are sequentially and circularly connected, and the output end of the burner penetrates into the inside of the old sand hot treatment box and is located above the annular hot air guide pipe.

[0016] Preferably, the top of the annular hot air guide pipe is uniformly provided with air jet nozzles in a ring shape, and the circulating guide pipe is provided with a return air fan.

[0017] Preferably, the waste gas filtering device comprises a waste gas filtering cylinder, a filtering adsorption layer and an exhaust long pipe, the waste gas filtering cylinder is connected to the top of the annular hot air guide pipe, the filtering adsorption layer is arranged on the inner side of the waste gas filtering cylinder, and the exhaust long pipe is connected and arranged on the top of the waste gas filtering cylinder.

[0018] (Three) beneficial effects

[0019] Compared with the prior art, the environmental protection low-consumption old sand hot method regeneration treatment device has the following beneficial effects:

[0020] 1、The environmental protection low-consumption old sand hot method regeneration treatment device, through the filter residue plate, old sand can enter the old sand hot method treatment box inside from the leakage prevention hopper, is supported by the filter residue plate, the burner can heat, waste gas and waste heat are discharged from the air outlet backflow pipe, waste gas is discharged from the waste gas filter device, waste heat is backflowed to the annular hot air inlet pipe through the circulating flow guide pipe, the annular hot air inlet pipe backflows and heats, waste heat is uniformly sprayed, the circulating flow guide pipe is assisted by the backflow fan, the waste heat circulation effect is good, the waste heat utilization rate is high, the device heat energy recycling effect is good, and it is more environmental protection and low energy consumption.

[0021] 2、The environmental protection low-consumption old sand hot method regeneration treatment device, through the driving motor driving the driving turnover frame, old sand on the filter residue plate is uniformly turned over, impurities are filtered to the bottom of the old sand hot method treatment box from the filter residue plate, and are discharged from the waste material outlet pipe; the treated sand material on the top of the filter residue plate can be discharged from the sand material outlet pipe, the regeneration treatment quality is excellent, the efficiency is relatively high, the old sand hot method turnover stirring capacity of the device is good, heating is uniform, and the treatment efficiency and treatment quality are excellent. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view of the structure of the utility model;

[0023] Figure 2 It is a front view of the structure of the utility model;

[0024] Figure 3 It is a front view of the structure of the utility model;

[0025] Figure 4 It is a front view of the structure of the utility model;

[0026] Figure 5 It is a front view of the structure of the utility model;

[0027] In the drawing: 1, old sand hot method treatment box; 2, driving motor; 3, filter residue plate; 4, driving turnover frame; 5, leakage prevention hopper; 6, sand material outlet pipe; 7, waste material outlet pipe; 8, air outlet backflow pipe; 9, annular hot air inlet pipe; 10, circulating flow guide pipe; 11, backflow fan; 12, burner; 13, waste gas filter device; 131, waste gas filter cylinder; 132, filter adsorption layer; 133, exhaust long pipe; 14, sealing cover; 15, hopper leakage prevention cover; 16, heat-resistant insulation plate; 17, cleaning scraper; 18, air injection nozzle. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] Please refer to Figures 1-5 , the environmental protection low consumption old sand hot method regeneration treatment device, including old sand hot method treatment box 1, old sand hot method treatment box 1 top is equipped with drive motor 2;

[0030] Old sand hot method treatment box 1 inside is equipped with filter residue plate 3, the center of filter residue plate 3 is rotatably connected with drive stir-fry frame 4, the top end of drive stir-fry frame 4 is connected with the output end of drive motor 2, the side of old sand hot method treatment box 1 top is equipped with leakage prevention discharge hopper 5;

[0031] The side of old sand hot method treatment box 1 top is equipped with air outlet backflow pipe 8, the bottom of old sand hot method treatment box 1 inside is equipped with annular hot air inlet pipe 9, the side of old sand hot method treatment box 1 is equipped with circulating flow guide pipe 10, the two ends of circulating flow guide pipe 10 are connected with annular hot air inlet pipe 9 and air outlet backflow pipe 8 respectively, the side of old sand hot method treatment box 1 away from circulating flow guide pipe 10 is equipped with burner 12, the top of circulating flow guide pipe 10 is equipped with waste gas filter device 13;

[0032] The beneficial effects expressed by the present scheme are as follows: by providing the filter residue plate 3, the old sand can enter the inside of the old sand hot method treatment box 1 from the leakage prevention discharge hopper 5, and be carried by the filter residue plate 3; the burner 12 can heat, the waste gas and residual heat are discharged by the air outlet backflow pipe 8, the waste gas is filtered and discharged by the waste gas filter device 13, the residual heat is backflowed to the annular hot air inlet pipe 9 by the circulating flow guide pipe 10, the annular hot air inlet pipe 9 performs residual heat backflow and heating, the residual heat is uniformly sprayed, the backflow fan 11 plays an auxiliary pressurization and flow guide role on the circulating flow guide pipe 10, the residual heat circulation effect is good, the residual heat utilization rate is high, the drive motor 2 drives the drive stir-fry frame 4 to rotate and uniformly stir the old sand on the filter residue plate 3, the impurities are filtered by the filter residue plate 3 to the bottom of the old sand hot method treatment box 1 and discharged by the waste material outlet pipe 7, the treated sand material on the top of the filter residue plate 3 can be discharged by the sand material outlet pipe 6, the regeneration treatment quality is excellent, the efficiency is relatively high, the device heat energy recycling effect is good, it is relatively environmental protection and low energy consumption, and the old sand hot method stir-frying and stirring capacity is good, the heating is uniform, the treatment efficiency and treatment quality are excellent.

[0033] Further, the side of old sand hot method treatment box 1 is equipped with sand material outlet pipe 6, the sand material outlet pipe 6 is located above the side of filter residue plate 3, the bottom of old sand hot method treatment box 1 is equipped with waste material outlet pipe 7.

[0034] By setting the sand outlet pipe 6 and waste outlet pipe 7, the waste slag can be filtered by the filter residue plate 3 and discharged through the waste outlet pipe 7, and the sand on the filter residue plate 3 can be discharged through the sand outlet pipe 6, and the discharge is stable.

[0035] Further, the sand outlet pipe 6 and the waste outlet pipe 7 are provided with sealing covers 14 away from one side of the old sand thermal treatment box 1, and the top of the leakage prevention hopper 5 is provided with a funnel leakage prevention cover 15.

[0036] By setting the sealing cover 14, the pipe opening of the sand outlet pipe 6 and the waste outlet pipe 7 can be sealed, and the funnel leakage prevention cover 15 plays a leakage prevention protection role for the leakage prevention hopper 5, preventing hot gas from being discharged, and having good practicability.

[0037] Further, the filter residue plate 3 is a high-temperature resistant screen, the shaft center of the driving stir-frying frame 4 is rotationally connected to the center of the filter residue plate 3, the top of the driving stir-frying frame 4 penetrates the top of the old sand thermal treatment box 1, and the driving stir-frying frame 4 is provided with an oil seal at the joint penetrating the old sand thermal treatment box 1.

[0038] By setting the filter residue plate 3 as a high-temperature resistant screen, the high-temperature resistance is achieved while playing a filtering role, and the operation is stable. The shaft center of the driving stir-frying frame 4 is rotationally connected to the center of the filter residue plate 3, which can stably support the driving stir-frying frame 4, and the driving stir-frying frame 4 is provided with an oil seal at the joint penetrating the old sand thermal treatment box 1, so that the driving stir-frying frame 4 is stably supported and rotated, and has good adaptability.

[0039] Further, the old sand thermal treatment box 1 is provided with a heat-resistant insulation plate 16 at the inner top wall, the bottom of the leakage prevention hopper 5 penetrates the heat-resistant insulation plate 16, and the shaft center of the driving stir-frying frame 4 is rotationally connected to the center of the heat-resistant insulation plate 16.

[0040] By setting the heat-resistant insulation plate 16, the heat-resistant insulation plate 16 can isolate and protect the top of the old sand thermal treatment box 1 when burning inside the old sand thermal treatment box 1, preventing the heat energy from damaging the motor and other equipment, and having good practicability.

[0041] Further, the stirring blades of the driving stir-frying frame 4 are attached to the top of the filter residue plate 3, the bottom of the driving stir-frying frame 4 is provided with a cleaning scraper 17, and the cleaning scraper 17 is attached to the inner bottom wall of the old sand thermal treatment box 1.

[0042] By setting the stirring blades of the driving stir-frying frame 4 to be attached to the top of the filter residue plate 3, the operation of the driving stir-frying frame 4 can stably stir the old sand on the top of the filter residue plate 3, hang it out, and prevent residue after discharge, and has good practicability.

[0043] Further, the air outlet return pipe 8, the annular hot air introduction pipe 9, the circulating flow guide pipe 10 and the old sand thermal treatment box 1 are sequentially and circularly communicated, and the output end of the burner 12 penetrates into the inside of the old sand thermal treatment box 1 and is located above the annular hot air introduction pipe 9.

[0044] By sequentially and circularly communicating the air outlet return pipe 8, the annular hot air introduction pipe 9, the circulating flow guide pipe 10 and the old sand thermal treatment box 1, the thermal energy circular communication effect is good, the burner 12 plays a thermal energy combustion role, the thermal regeneration effect is stable, and the thermal energy utilization rate is relatively high.

[0045] Further, the top of the annular hot air introduction pipe 9 is uniformly provided with the air jet nozzle 18 in a ring shape, and the circulating flow guide pipe 10 is provided with the return air fan 11.

[0046] By arranging the air jet nozzle 18, the annular hot air introduction pipe 9 plays a hot gas spouting role, the nozzle of the air jet nozzle 18 is small, the waste material is not easy to enter, the practicability is good, and the air jet nozzle 18 is arranged in a ring shape, the hot energy uniform spouting effect is good, the return air fan 11 plays an auxiliary pressurization flow guide role on the circulating flow guide pipe 10, the waste heat circulation effect is good, and the waste heat utilization rate is high.

[0047] Further, the waste gas filtering device 13 includes a waste gas filtering cylinder 131, a filtering and adsorbing layer 132 and an exhaust long pipe 133, the waste gas filtering cylinder 131 is communicated at the top of the annular hot air introduction pipe 9, the filtering and adsorbing layer 132 is arranged on the inside of the waste gas filtering cylinder 131, and the exhaust long pipe 133 is communicated and arranged at the top of the waste gas filtering cylinder 131.

[0048] By arranging the waste gas filtering device 13 including the waste gas filtering cylinder 131, the filtering and adsorbing layer 132 and the exhaust long pipe 133, the filtering and adsorbing layer 132 is installed at equal distances on the inside of the waste gas filtering cylinder 131, the waste gas discharged from the air outlet return pipe 8 can be introduced into the waste gas filtering cylinder 131, the waste gas impurities are filtered by the filtering and adsorbing layer 132, the waste heat is re-circulated and introduced into the box by the circulating flow guide pipe 10, after the waste gas is filtered by the filtering and adsorbing layer 132, the waste gas can be stably discharged by the exhaust long pipe 133, the discharge effect is good, the waste gas filtering capacity is good, and the environmental protection performance is good.

[0049] It should be noted that all the devices in the present application are common market devices, which can be selected according to the needs during specific use, and the circuit connection relationship of each device is a simple series and parallel connection circuit, and there is no innovation point in the circuit connection, which can be easily realized by the person skilled in the art and belongs to the prior art, and will not be described in detail.

[0050] Working principle: The old sand is fed into the old sand thermal treatment box 1 through a filter plate 3 installed inside the box. The old sand is ventilated and heated by the filter plate 3 and heated by the burner 12. The waste heat and exhaust gas in the old sand thermal treatment box 1 are discharged through the exhaust return pipe 8. The exhaust gas is filtered and discharged by the exhaust gas filter device 13 at the top of the exhaust return pipe 8. The waste heat can be guided to the circulation guide pipe 10 through the exhaust return pipe 8 and then back to the annular hot air inlet pipe 9 through the circulation guide pipe 10. The waste heat is returned and heated through the annular hot air inlet pipe 9. The heat energy recycling effect is good. The annular hot air inlet pipe 9 is annular and the waste heat is sprayed evenly. The return fan 11 plays an auxiliary role in pressurizing and guiding the circulation guide pipe 10. The waste heat recycling effect is good and the waste heat utilization rate is high.

[0051] The old sand thermal treatment box 1 is equipped with a driven stirring rack 4, which can be driven by a drive motor 2. When the old sand is on the filter residue plate 3, the driven stirring rack 4 can rotate and stir evenly, so that the heat energy is kept uniform during thermal regeneration. After uniform stirring, the impurities stirred out by the old sand can be filtered through the filter residue plate 3 to the bottom of the old sand thermal treatment box 1 and discharged through the waste outlet pipe 7. The treated sand at the top of the filter residue plate 3 can be discharged through the sand outlet pipe 6 and scraped off with the assistance of the filter residue plate 3. After the old sand is regenerated, it can be discharged stably and is not easy to leave residue. This makes the device have a good thermal energy recycling effect, is more environmentally friendly and has low energy consumption. Moreover, the old sand thermal stirring and stirring ability is good, the heating is uniform, and the processing efficiency and processing quality are excellent.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly and low-consumption old sand hot method regeneration treatment device, comprising an old sand hot method treatment box (1), characterized in that: The top of the old sand hot method processing box (1) is provided with a driving motor (2); The inside of the old sand hot method processing box (1) is provided with a filter residue plate (3), the center of the filter residue plate (3) is rotatably connected with a driving stirring frame (4), the top end of the driving stirring frame (4) is connected with the output end of the driving motor (2), the side of the top of the old sand hot method processing box (1) is provided with a leakage-proof discharge hopper (5); The side of the top of the old sand hot method processing box (1) is provided with an air outlet backflow pipe (8), the bottom of the inside of the old sand hot method processing box (1) is provided with an annular hot air inlet pipe (9), the side of the old sand hot method processing box (1) is provided with a circulating flow guide pipe (10), the two ends of the circulating flow guide pipe (10) are respectively communicated with the annular hot air inlet pipe (9) and the air outlet backflow pipe (8), the side of the old sand hot method processing box (1) away from the circulating flow guide pipe (10) is provided with a burner (12), the top of the circulating flow guide pipe (10) is provided with a waste gas filtering device (13).

2. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 1, characterized in that: The side of the old sand hot method processing box (1) is provided with a sand outlet pipe (6), the sand outlet pipe (6) is located above the side of the filter residue plate (3), the bottom of the old sand hot method processing box (1) is provided with a waste outlet pipe (7).

3. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 2, characterized in that: The side of the sand outlet pipe (6) and the waste outlet pipe (7) away from the old sand hot method processing box (1) is provided with a sealing cover (14), the top of the leakage-proof discharge hopper (5) is provided with a funnel leakage-proof cover (15).

4. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 1, characterized in that: The filter residue plate (3) is a high-heat-resistant screen, the shaft center of the driving stirring frame (4) is rotatably connected at the center of the filter residue plate (3), the top of the driving stirring frame (4) penetrates the top of the old sand hot method processing box (1), the driving stirring frame (4) is provided with an oil seal at the joint penetrating the old sand hot method processing box (1).

5. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 1, characterized in that: The inside top wall of the old sand hot method processing box (1) is provided with a heat-resistant insulation plate (16), the bottom of the leakage-proof discharge hopper (5) penetrates the heat-resistant insulation plate (16), the shaft center of the driving stirring frame (4) is rotatably connected at the center of the heat-resistant insulation plate (16).

6. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 1, characterized in that: The stirring blade of the driving stirring frame (4) is attached to the top of the filter residue plate (3), the bottom of the driving stirring frame (4) is provided with a cleaning scraper (17), the cleaning scraper (17) is attached to the inner bottom wall of the old sand hot method processing box (1).

7. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 1, characterized in that: The air outlet backflow pipe (8), the annular hot air inlet pipe (9), the circulating flow guide pipe (10) and the old sand hot method processing box (1) are sequentially and circularly communicated, the output end of the burner (12) penetrates to the inside of the old sand hot method processing box (1) and is located above the annular hot air inlet pipe (9).

8. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 1, characterized in that: The top of the annular hot air inlet pipe (9) is uniformly provided with a jet nozzle (18), the circulating flow guide pipe (10) is provided with a backflow fan (11).

9. The environmentally friendly, low consumption, old sand thermal regeneration treatment device according to claim 1, characterized in that: The exhaust gas filtering device (13) comprises an exhaust gas filtering cylinder (131), a filtering adsorption layer (132) and an exhaust long pipe (133), the exhaust gas filtering cylinder (131) is communicated with the top of the annular hot air guide pipe (9), the filtering adsorption layer (132) is arranged on the inner side of the exhaust gas filtering cylinder (131), and the exhaust long pipe (133) is communicated and arranged on the top of the exhaust gas filtering cylinder (131).

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